Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

First 5 hours great, after that AHI shoots through the roof. Thoughts?
#1
So this has been pretty typical for me, now in month 2 of cpap/bipap use. The first 3/4 of the night are fine. The last 1/4 I see my AHI skyrocket. Any thoughts or advice?


[Image: h6J3tbm.jpg]
[Image: KfkQcOR.jpg]
Post Reply Post Reply
#2
toinewi.

You don't have bad leaks and the therapy looks to be working at the beginning of the night.
I got a similar curve as you got (not as bad): at the beginning AHI is good at the end AHI is bad.
The solution is very simple: When we are in deep sleep phase and breathing nice with the CPAP, we feel so good that, we lay in our backs and begin the problems.
Of curse I am guessing in your case. There are different methods to avoid sleeping in your back described in the forum, I haven't test them because I got another problems.
Pay attention to this and let me know what you do, because it will be a time that I will beginning to cope with this problem.
That doesn't mean that later you can fine tuning your therapy.
Ralph.
Post Reply Post Reply
#3
Thanks, that was my assumption as well, the on back. I'm still fine tuning dealing with that one, and have been working with pool noodles to try and prevent sleeping on my back.
Post Reply Post Reply


#4
Hi, toinewi. I am not a BiPap user, but I have the same OA clusters late in my sleep, resulting in the "camel humps" in the hourly AHI graph. If you had an in-lab diagnostic sleep study, you might check it to see if your AHI values were calculated for various sleep positions and sleep stages. I'll bet you'll find that your obstructive apnea is much worse during REM sleep.

I think you could improve your overall AHI score by increasing your EPAPmin value to something more like 14. Even if you don't need that much pressure for your events in the first half of the night, a higher EPAPmin value would mean that the algorithm doesn't have as far to go when it suddenly needs to increase your pressure to 25.

Your actual IPAP pressure needs during the night may be 14-25, but my conclusion from watching the behavior of the PR algorithm has been that it cannot handle that large a range and give good results.

If you discover that 25 cm isn't enough pressure to control your OAs, then I'm not sure what you do. Probably avoid sleeping on your back.
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Waking every 2 -3 hours Judy1843 9 296 07-16-2017, 11:12 AM
Last Post: chill
  Thoughts on my Auto Data? Hydrangea 23 933 07-13-2017, 06:55 PM
Last Post: quiescence at last
  [Equipment] New user needs help picking ASV machine with great software. Sleepyhead? Others? gtrlum 4 185 06-27-2017, 06:24 PM
Last Post: gtrlum
  Curious to get thoughts from the group CardiacCrusher 14 536 06-08-2017, 11:35 PM
Last Post: PaytonA
  [CPAP] Using VPAP During Waking Hours for Easier Breathing? gamegrrl 5 240 06-06-2017, 03:06 PM
Last Post: dmeRT
  Great AHI....for somewone else CPAPreturnee 10 407 05-29-2017, 04:02 PM
Last Post: PsychoMike
  [CPAP] Looking for Thoughts on Smartstart Ticman1 12 335 05-27-2017, 02:37 PM
Last Post: sptrout

Forum Jump:

New Posts   Today's Posts




About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.

For any more information, please use our contact form.